vibration - Team Camaro Tech
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post #1 of 11 (permalink) Old Dec 12th, 99, 02:05 PM Thread Starter
 
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I have two questions...
1)I have a fairly new 350 eng. and tranny that was recently put in a GMC Van that I am planning on transplanting into a Camaro. Are there any large potential problems?
2)There is a vibration when I reach about 3000 rpms (both stationary and when moving). I know that some of the parts on this engine came off of a 305 such as the pulleys, alternator, and a few other pieces. Anyone know what the problem is? My alternator is charging a little high also... Thanks in advance!
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post #2 of 11 (permalink) Old Dec 13th, 99, 05:29 PM
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Could be a combination of the flywheel is out of balance or the dampner is either the wrong diameter or out of balance. Could also be that the torque converter is out of balance.

If I remember correctly, you could not use a flwheel and dampner from a 305 to a 350. The same would also apply to the 400 flywheel and dampner to a 350.
Since the crank, rods and pistons are all lighter than a 350 it could be your problem.
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post #3 of 11 (permalink) Old Dec 13th, 99, 05:39 PM
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What year is the engine, and what year is the van??
The balancers and flexplates are the same from 305 to 350. UNLESS the engine is the 86-up one piece rear main seal engine, then the flexplates are different from the older two piece rear main engines. The 400 has always taken it's own balancer and flywheel.
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post #4 of 11 (permalink) Old Dec 14th, 99, 10:56 AM Thread Starter
 
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Thanks for the input!
The engine is a remanufactured engine bought from a company, so I don't know what year the engine was originally.
The van is an 84.
Is this a viable option to transplant into an
older Camaro? I don't know that much about engine swaps...
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post #5 of 11 (permalink) Old Dec 15th, 99, 04:12 AM
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The 350 should drop right in with the correct engine mounts. No problems...
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post #6 of 11 (permalink) Old Dec 23rd, 99, 04:54 PM Thread Starter
 
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okay, here's the lowdown....
the engine is a reman. 1991 350 and the tranny is a 350. the guy that installed it did indeed use a 305 flywheel, so I'm guessing that is my problem...
thanks for all the help everyone...
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post #7 of 11 (permalink) Old Dec 26th, 99, 10:38 AM
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Angry

I'm having the exact same problem in my 74 Camaro. Following my engine builders advice so far I've run the engine with a different balancer(no difference) and run it with the torque converter disconnected(no difference). So the nexy step will be the flex plate.Mine has alot of runnout in it and there should not be more than around .007" runout on the plate. Check all these and if you find your solution let me know what it was.

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post #8 of 11 (permalink) Old Dec 27th, 99, 04:34 AM
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BTW...how much vibration are we talking about? Feel it in the seat or does it rattle your teeth?

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post #9 of 11 (permalink) Old Dec 27th, 99, 06:06 PM
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<BLOCKQUOTE>quote:</font><HR>Originally posted by jashoeuh:
okay, here's the lowdown....
the engine is a reman. 1991 350 and the tranny is a 350. the guy that installed it did indeed use a 305 flywheel, so I'm guessing that is my problem...
thanks for all the help everyone...
<HR></BLOCKQUOTE>

You may need an 86 up flexplate for a 350. Also check if the vibration dampener is correct for a 350. I think all the small blocks with the one piece rear seal are externally balanced, but I'm not shure if it's the flywheel only, or the flywheel and balancer.
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post #10 of 11 (permalink) Old Dec 28th, 99, 03:36 PM
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Jash,
If the motor is definitely a 1991, it should be a one piece rear main seal motor. If so, it needs a particular flywheel (flexplate if you wish) If he used the flywheel off your 1984 305, that is definately the problem, even though I thought GM changed the bolt patterns on the one piece flywheels. I could check for sure if you want in the morning. If he used a flywheel off a later model, one piece seal, 305...it should work. It is the same as the late model 350's.
Hope this helps, if you have any other questions you are welcome to e-mail me directly.


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post #11 of 11 (permalink) Old Dec 28th, 99, 05:03 PM
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Question

This may be a stupid question...but what is the easiest way to determine what flywheel is in your car? I have often wondered about the flywheel on my 350 since I cant seem to find a cover to fit over it....



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Steve McCorry
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